Influence of Combined Addition of Boron and Strontium on High-Temperature Wear Behavior of A356 Alloy |
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| Authors: | M S Prabhudev V Auradi K Venkateswarlu S A Kori |
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| Affiliation: | 1. Department of Mechanical Engineering, Government Polytechnic, Kalgi, Karnataka, India;2. Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur, Karnataka, India;3. CSIR–National Aerospace Laboratory, Bangalore, Karnataka, India;4. Department of Mechanical Engineering, Basaveshwar Engineering College, Bagalkot, Karnataka, India |
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| Abstract: | In the present study, the effect of the combined addition of boron (B) and strontium (Sr) on the high-temperature dry sliding wear behavior of A356 alloy has been investigated using a pin-on-disc wear testing machine attached with a furnace. During wear studies, the effect of alloy composition, normal pressure, sliding speed, and sliding distance on A356 alloy at four temperatures, namely, room temperature and 100, 200, and 300°C, have been investigated. Further, the cast alloys and worn surfaces of A356 alloy with and without B and Sr were characterized by scanning electron microscopy (SEM)/energy-dispersive spectroscopy (EDS) microanalysis. Results indicate that the combined addition of B and Sr to A356 alloy has led to improvements in wear properties. This is due to a change in microstructure, improvement in mechanical properties, and the formation of an oxide layer between the mating surfaces during the sliding wear process. |
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| Keywords: | A356 alloy automotive microstructural studies wear wear mechanism oxidative wear |
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